Weegy: When continents pull apart a rift valley forms filling up with ocean water. The Great Rift Valley is the best example; given enough time (millions of years) ocean water will come to flood that rift valley. (More)

Weegy: Water vapor is one of the many gasses released during volcanic eruptions. [ The water in the oceans primarily originated from the condensation and precipitation of water vapor that had been out-gassed by volcanic eruptions over the 3-4 billions of years of Earth's geologic history. ] (More)

Weegy: The water cycle, also known as the hydrologic cycle or H2O cycle, describes the continuous movement of water on, above and below the surface of the Earth. Water can change states among liquid, vapour, and ice at various places in the water cycle. [ Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go.The water moves from one reservoir to another, such as from river to ocean, or from the ocean to the atmosphere, by the physical processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. In so doing, the water goes through different phases: liquid, solid, and gas.
The water cycle also involves the exchange of heat energy, which leads to temperature changes. For instance, in the process of evaporation, water takes up energy from the surroundings and cools the environment. Conversely, in the process of condensation, water releases energy to its surroundings, warming the environment.
The water cycle figures significantly in the maintenance of life and ecosystems on Earth. Even as water in each reservoir plays an important role, the water cycle brings added significance to the presence of water on our planet. By transferring water from one reservoir to another, the water cycle purifies water, replenishes the land with freshwater, and transports minerals to different parts of the globe. It is also involved in reshaping the geological features of the Earth, through such processes as erosion and sedimentation. In addition, as the water cycle involves heat exchange, it exerts an influence on climate as well. ] (More)

Weegy: The hydrologic cycle begins when the sun heats water in the oceans, lakes, or streams. The heated water is able to evaporate, meaning that it turns into water vapor and enters the air. [ Water can also enter the air when plants "breathe" in a process known as transpiration. An average tree can transpire hundreds of gallons of water into the air every day. ] (More)